Hulling-machine.



PATENTED NOV. 5, 1907..

L.LASH. HULLING MACHINE. APPLICATION TILED NOV. 2, 1906.

2 SHEETS-SHEET 1.

INVENTOR.

W1 TNESSES;

A TTORNE Y5 UNITED STATES PATENT ()EETQE.

LEVI LASH, OF GARRETSON, SOUTH DAKOTA, ASSIGNOR OF ONE-HALF TOJAY P. PETERSEN,

' OF RUSSELL, MINNESOTA.

HULLING-MACHINE Specification of Letters Patent.

Yatented. Nov. 5, 1907.

Application filed November 2. 1906. Serial No. 341.746.

To all. whom it may concern:

Be it known that I, LEVI LASH, a citizen of the United States, residing at Garretson, in the county of Minnehaha and State of South Dakota, have invented a new and useful Hulling-Machine, of which the following is a specification.

This invention relates to hulling machines and is more particularly adapted for hulling German wheat or spelts.

The object of the invention is to provide a simple form of machine which will thoroughly hull and sepa- 7 rate the hull and chaff from the wheat without danger of injury to the grains.

Another object is to provide novel forms of hulling elements, one of which is adapted to rotate in either direction with equal efficiency.

Another object is to provide means for adjusting the machine whereby it will hull wet or tough grain as well as dry or a better grade of grain with equal efficiency.

With the above and other objects in view, the invention consists of certain novel features of construction and combinations of parts which will be hereinafter more fully described and pointed out in the claims.

In the accompanying drawings is shown the preferred form of the invention.

In said drawingsz Figure 1 is a vertical longitudinal section through the machine; Fig. 2 is a section on the line 2-2, Fig. 1; Fig. 3 is an end elevation of a portion of the machine and showing the connection between the screens and the power shafts; Fig. 4 is a detail view of a portion of the working face of the concave or casing of the hulling machine; and Fig. 5 is a similar view of a portion of the rotatable elements.

Referring to the figures by characters of reference, 1 is a fame of suitable construction in which is secured a frusto-conical casing 2 having upon its inner or working face parallel rows of rectangular lugs 3, the lugs being arranged alternately and spaced apart along diagonal lines so that spiral passages are formed between the lugs, said passages being formed by the communicating rectangular spaces which are formed by the lugs. These passages are of sufficient breadth to permit grain to pass therethrough during the hulling operation.

A drive shaft 4 is journaled adjacent its ends within the end portion of the frame 1, and secured to and rotatable with the shaft is a frusto-conical roller 5 which is mounted within the casing 2 and has upon its outer surface a plurality of outwardly-projecting rectangular lugs 6. These lugs are arranged in series, each series consisting of two parallel rows of alternately-arranged lugs, such as shown in Fig. 5, and the series are preferably spaced apart considerable distances, there being preferably about ten series upon the roller. The parts are so proportioned that the lugs upon the roller rest close to the ends of the lugs 3. A chute 7 is mounted within the frame 1 and extends from the upper portion thereof downward to the inlet end of the casing 2 and serves to direct grain into said casing prior to its passage around the roller 5.

Each end of the shaft 4 carries an eccentric 8 and mounted on each eccentric is an upright arm 9 having an elongated opening 10 therein Within which the eccentric works, and as this opening is formed longitudinally within the arm, it will be understood that the rotation of the eccentric will cause lateral but not longitudinal movement of the arm. This will be readily understood from an examination of Fig. 3 of the drawings. The arm 9, adjacent the chute 7, extends downward from the shaft 4 a greater distance than upward therefrom, while the reverse is true of the arm 9 that is located at the other end of the machine. Each arm carries a light rectangular frame 11 and secured to the upper ends of these frames and of the arms included therein is an inclined frame 12 extending throughout the length of the machine and carrying a board 13 which terminates short of the upper end of the chute 7. Disposed above the board is a screen l l and at the upper end of the screen is a receiving board 15, while a delivery board 16 is disposed at the lower end of the screen and projects beyond the frame 12 and the end of the machine. Another frame 17, somewhat similar to the frame 12, is secured to the lower ends of the arms 9 and their frames 11, and this frame 17 carries an inclined board 18 the end of which is adapted to discharge material into an inclined chute 19 which extends at right angles from and is supported by the frame 17 and is adapted to deliver material at one side of the machine. and chute 19, and located upon the frame 17 at the upper end of the inclined screen 20 is a receiving board 21, while a delivery board 22 is secured upon the frame 17 at the lower end of the screen 20 and projects beyond the ends of the machine. The chute 19 opens into a fine 23 which is open at its lower end and extends upward through a fan casing 24. The fan 25 within this casing is adapted to create a suction through the flue 23 and to discharge air and any chaff carried thereby through an outlet opening 26 extending at a tangent from the casing 24. It is, of course, necessary to provide a head 27 adjacent each end-of the casing 2 to prevent material from escaping past the board 21.

The roller 5 is adapted to be revolved in either di- A screen 20 is disposed above the board 18 90 14 and this action will be accelerated by the rapid lateral reciprocation which is imparted to both of the screens 14 and 20 by the eccentrics 8. The screen 14 is of such a mesh that only desirable grain will pass therethrough and on to the board 13, while large and objectionable material will be discharged from the machine over the board 16. The grain will be directed from the board 13 on to the chute 7 and this will direct it into the small end of the casing 2 where it will be fed between the lugs 3 in said casing and the lugs 6 on the roller. Each series of lugs 6 acts as a blade to carry the grain around the roller and over the lugs 3, the spaces between the lugs 6 forming pockets into which certain of the grain will be seated. The lugs 3 and 6 during this operation will act upon the grain to remove the hulls therefrom, and the grain will in the meantime pass between the lugs 3, as shown by the arrows in Fig. 4, and will finally be discharged with the hulls upon the board 21. From this point the hulls and grain will travel downward by gravity over the screen 20, this action being accelerated by the lateral reciprocation of the screen, and the grain will pass through the screen and on to the board 18, while the chaff and undesirable part will be discharged from the board 22. The grain and a portion of the chaff will be directed from the board 18 into the chute 19, from which it will be discharged into the fine 23 and the suction within this flue will be sufficient to draw the chaff upward and discharge it through the opening 26, while the separated grain will fall by gravity from the outlet end of the flue.

By adjusting the roller 5 longitudinally upon its shaft and into the casing the lugs thereon are brought I l I: 1

eflicient in that, by reason of the novel arrangement of lugs upon the hulling elements, the hulls will be effectively removed without danger of injury to the grain.

The preferred form of the invention has been set forth in the foregoing description, but I do not limit myself thereto as I am aware that modifications may be made therein without departing from the spirit or sacrificing the advantages thereof, and I therefore reserve the right to make such changes as fairly fall within the scope of the claims.

hat is claimed is 1* 1. In a machine of the character described the combination with a casing having rectangular diagonally spaced teeth upon the inner face thereof, a shaft extending through the casing, and a roller upon the shaft and having spaced series of rectangular teeth thereof, the teeth 01 each series being alternately arranged and diagonally spaced; of parallel inclined screens above and below the casing respectively, an inclined imperforate member below and movable with each screen, each member having an outlet, arms rigidly secured to and connecting the ends of the screens, means operated by the shaft and within the arms, for reciprocating the arms and screens laterally during the rotation of the shaft, and means for directing ma terial from the inclined device below the upper screen to the casing, said casing being disposed to discharge material upon the lower screen.

2. In a machine of the character described the combination with a casing, a shaft extending therethrough, and a roller upon the shaft and rotatable within the casing; of parallel inclined screens above and below the casing respectively, an inclined board below and movable with each screen, each board having an outlet, parallel arms rigidly secured to and connecting the ends of the screens, said shaft extending through the arms, cams upon the shaft and within the arms for reciprocating said arms together, and means for directing material from the board 01 the upper screen to the casing, said casing being adapted to discharge material upon the lower screen. i

in testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

LEVI LASH.

Witnesses W. .l. Wns'r, J. P. PETERSEN. 

